Function encoding_c::encoding_ascii_valid_up_to

#[no_mangle]
pub unsafe extern fn encoding_ascii_valid_up_to(buffer: *const u8,
                                                buffer_len: usize)
                                                -> usize

Validates ASCII.

Returns the index of the first byte that makes the input malformed as ASCII or buffer_len if buffer is entirely valid.

Undefined behavior

UB ensues if buffer and buffer_len don't designate a valid memory block.